One character in this novel dies after a talisman 
One character in this novel dies after a talisman of Hecate is stolen from under his pillow. The protagonist of this novel overhears two historians, one of whom writes beautifully but not factually and the other of whom writes factually but not beautifully, arguing about the correct way to write history. At one point in this novel, Livia frames Postumus for raping her granddaughter in order to have him exiled. The Sibyl at Cumae prophesies that the protagonist will "speak clear" nineteen hundred years hence, despite his stutter. This novel ends with the title character's ascension after Cassius Chaerea's assassination of Caligula. For 10 points, name this novel by Robert Graves about the titular Roman emperor.
One character in this novel dies after a talisman of Hecate is stolen from under his pillow.
I, {Claudius}